Gas-producer.



H. F. SMITH. GAS PRODUCER. APPLICATION FILED SEPT. 20,1912.

Patented May 26, 19'14.

4 SHEETS-SHEET l.

'H. F. SMITH.

' GAS PRODUCER. APPLIGATION FILED sEPT.2o,1912.

Patented May 26, '1914 4 SHEETS-SHEET 2.

UUUUUUUUUUUUUUULIUL WITIYESSES Patented May 26, 1914.

4 SHEETS-SHEET 3.

N I NTOR* Altomejul` H. F. SMITH. GAS PRODUCER."

. APPLIOATION FILED SEPT. 2o, 1912..

. Patented May 26, 1914.

4 SHEETS-SHEET 4.

Z I/EJYTOR 06174414 LS/5 215g? up the coke lduring the HARRY FORD SMITH,0F LEXINGTON, OHIO.

GAS-PRODUCER.

incenso.

Sp eccation of Letters Patent.

Patented May 26, 1914.

Application led September 20, 1912. Serial No. 721,417.

To (177 whom it may concern Be it known that I, HARRY F. SMITH, acitizen of the United States, residing at Lexington, in the county ofRichland and State of Ohio, have invented certainnew and usefulImprovements in Gas Producers, of which the following is aspeciiication.

My invention. relates to an improvement in gas producers, and the objectis to provideA a rectangular casing having a central gas outletextending in a direction of the greatest dimensions of the casing, withfuel magazines located laterally on either side of the gas outlet, anddownwardly converging mechanically operated grates extending on eitherside parallel to the gas outlet.

The grate bars are pivoted at one end and that the bars arethrownalternately up and back by the action are actuatedby cams, so

of the cams. In this manner the gratebars act as stokers to force the.fuel radially inward toward the center producing an underfeed effectonnthe fuel, thereby largely destroying the tar, and also serving tobreak and eliminating the -need of hand firing. ,Vl/'hen' the bars moveinward theI fuel is forced ahead of the barstoward the center of theproducer, andvwhen the bars return, a space is formed between the barsand the fuel bed, which space is partially iilled ,by the fresh fuelfrom `alcove sliding down along the lining. By this method or processfresh fuel is keptfeeding downward onto the lateral grato sections andthe fuel is ignitedand partially coked when it is forced inward towardthe center of the incandescent fuel bed, and .the fresh coal comes intocombustion rst on these OfratesMand any coke that may be formed intosmall pieces by the alternate movements of the lateral grate bars.Furthermore, in this manner an underfeed effect is produced whereby alarge amountof the tar and volatile matter in the coal is consumed. y

The invention consists of certain novel features of construction andcombinations of parts which will be hereinafter set forth and moreparticularly pointed out in the claims.

drawings Figure l' In the accompanying is a top yplan view, with a.portion of the casing broken away to show the interior construction:Fig. 2 cal sectional View' through the ash pits; Fig. 3 is an end View;Figs. 4 and 5 are eninitial combustion is broken upv to the brick.through the wall `s a longitudinal verm-,

respective pits 4 can lloarged detail sectional views of the vgrate ars.

A represents the rectangular casing ofthe producer, and l is the top.The casing is mounted on the wall 2 of the ash pitsvB, B..

Located through the center of the 4producer and mounted on suitablesupports orA rails .4

'are a series of sections of the usual or ordinary rocking gratos l5, 5.Extending longitudinally of the producer are two shafts 6, 6 which arelocated on each side of the shaking grate vsections 5. Mounted on theshafts 6 are grate bars 7,. 7 which extend along the side wallsof theproducer, and the upper ends of the bars received in a recessjS formedin the walls of the casing, butV the bars remain in a.p0sition sothattheir uppermost ends are in a line with the wall of the producer.Mounted in rear of the grate bars 7 on each side of thel producer is acam shaft 9 upon which shaft cams` are mounted.k

The cams are so located on each shaft that they will' bebrought intoengagement. with tliegrate bars for causing the grate bars ony each sideof the producer to be alternately operated. U-shaped brackets lO'vareformed on the grate bars 7, andl extend over the shafts 6 for supportingthe bars on the shafts. A rack `vbar 11 Iis provided. for. fastening thegrate bars to the shafts 6 against lateralmovement.

. The ash pits are arrangedin sections, that is for each section ofgrates an independent ash pit is formed. Connecting the walls 2 are aplurality of partitions 12 upon which are mounted 'the rails 4 forsupporting the ends of the grate sections 5. The `walls of the ash pitstaper downward to an openingv 13 formed in the bottom of the pitsthrough which the ash can he discharged. The upper end ormouth of theash pits are of greater width than the gratos 5 so that any ash passingthrough the gratos 7 4will enter the pits. At the ends of the grates asteel plate C is located which extends upwardly lining D Aof theproducer for completely separating the ash pits into separate divisions.

Extending longitudinally of the producer is a blast pipe E to which isconnected a pipe G for each ash pit. AThe vpipe Gextends 2 aii`d`into,-the pit, and a valve 14 is provided for each pipe Gr so thatthe-amount of air to be delivered to the be regulated tov suit therequirements. In some instances one grate vsection will require more airblast than angrasped by the operator. rlhe valve or hood- 14 which isapplied to each branch pipe G prevents any aslrfrom falling into thepipe of the opening in the pipe.-

the ro iso.

" vent 'the discharge of air' through the bot-A magazines 21, 21.

the

G when the hood is closed or in a raised position, the valve beingpreferably constructed cone-shaped and fittingA well over the end Theends 17 of a Pitot tube 18 extend into the branch pipes G, and thereading of the tubeis indicated .by a gage H. lOne gage and tubeisfitted to each branch blast pipe andy by reading the various gages it ispossi#l ble to determine when thelrate of flowroff' blast to each pipeis' the sameas that to every other section. If it'is found that onesection is taking more air than the restas would be indicated by ahigher reading'on 16 until the blast't'o each sectionis exactly thesame. Dampers 19 are provided for each opening 13 of the ash pits B topretom of the' ash pits. A U-shap'edhollow trough 2O extends the lengthof the producer for forming an outlet for the gas, and located on eachside of the trough are lateral fuel The fresh fuel is fed from themagazines down onto the downwardly converging grate bars 7, from whichit is fed to the center of the reducer onto the shaking grate sections5, a'.4 er the fuel has been first combusted on grate bars 7, and anycoke that may be formed during the 'initial combustion is broken up intosmall pieces 'by the alternate motions ofthe lateral grate bars. 7. Thegrate bars 7 can be made as wide or narrow as the character of the fuelwould seemto require. The bars are alternately oscillated by the camscausing the grate bars to act as stokers to force the fuel ward thecenter and producing an underfeed effect on the 'fuel thereby largelydestroyin the tar, and also breaking up the coke an eliminating the'need for hand firing. It has-been found unnecessary to barthe fire asthe fuel. settles regularly and inapproxr mately the manner indicated;that is, the fresh fuel falling on the grate bars as they returnto'their normal or rearmost position after forcin the fresh fuel inwardafter it has been initially combusted on the grate bars. With the aidof,Q the mechanically" agitated grate bars it isgpossible to extendprinciple tothe .largest size of prothls same ducer, and to lvavoid theproduction of tar.

fresh fuel on radially inward tothe foregoing and vto the compressed aircylinders.

It is to be noted that one of the chief difficulties has been from thediiiiculty encountered in keeping each. section lworking at its properproportion of the load. It is impossible to keep the fuel bed conditionsVin all exactly the same, and-there is consequently a tendency for theload to shift from those sectionswhere the fuel is packed tightly towardthose in which the fuel is loose and porous. The construction shown isimportant in providing practical means whereby this may be readilydetected and controlled.

' I claim- 1. A gas p lpducer comprising a rectangular casing having acentral gas outlet extending across the upper part of the producer inthe direction `of its greatest dimensions, fuel magazines lcatedlaterally on either. side of the gas outlet, and downwardly convergingmechanically operated grates extending Qn either sideparallel to the gasoutlet.

gas producer comprising a rectangular casing having a central gas outletextendin g across the upper part of the producer in the direction of itsgreatest dimensions, fuel magazines located laterally on'V either sideof thegas outlet, grate barsadapted to receive the fresh fuelV from themagazines, and means for oscillating the grate bars for causing them toforce the initially combusted fuel toward the4 center of the producer ontheir inward movement and to receive the their return movement.

3. A gas producer comprising a rectangula-r casing, tending across theupper part of the pro-` previously encountered in producers of verylarge unit size, and also in the operation of several'producer units inmultiple,

having a 'central gas outlet exducer in the direction of its greatestdimension, .fuel magazines located laterally on either side of the gasoutlet, downwardly converging mechanically operated grates ex tending oneither side parallel to the gas outlet, and a separate ash pit for eachgrate section.

4. A gas producer comprising a rectangular casinghaving a central gasoutlet extending across the upper part of the producer in the directionof its greatest dimension, fuel magazines located laterally on eitherside of the' gas outlet, downwardly converging mechanically operatedgrates extending on eitherside parallel to the gas outlet, a sep- Loewe@lending across the upper part o the pro dauer: iii the direction of itegreatest dimension, uel magazines located laterally en either eide ofthe gas outlet, grate bers adapted to receive the Iresh fuel from ben'ievaznee means for osclletino the rete bars for causing them to forcethe initially combusted fuel toward the centei" of the producer on theirimvel' movemenlJ and lo ieeeive the fresh fuel on their ietum movement,end e, separate ash pit ol each grate l section.

6. A gals producer comprising e rectanguler casing having e centisal geeoutlet exlaending aci-oss the upper peril ducer in the diifeot-ion 0l'its geees; ai sion, fuel magazines loca-teal leeefily either side of thegee outlet, grate here edapeel to lceceive ille lesh megezine@5 means ooscillating the grate' bers; 'oi' causing them o 'force the iii' il??combustefl fuel tovver the center of: lle j@ :y eluoer `oli their inwardmevementenel izeeeeive die fresh ll'iuel ee their relzum move ment, asapevate ash pi: ofeee grate eee tion, and means 'in each ash'ii: forssupply ing. enel regulating the blast 'of eil the 'grate section abovesaid ash pi.

In testimony whereof l affix my signal-ure in the presence of twoWitnesses.

HAE-RY FR@ SMETH.

Witnesses:

Geo. H. 'lRoUirJgk THoMAs C-13RET01Qu @epilee m? this paten may Yeeobtainefl fier ve cents each, hy addressng the Gommlsscnef @i 'Eeee'egWeshngtr, D.

